Masses 1 g and 9 g move with equal kinetic energies. Find ratio of magnitudes of their linear momenta.
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Masses 1 g and 9 g move with equal kinetic energies. Find ratio of magnitudes of their linear momenta.

G1 Physics · Accepted Answer

Step 1 — Principle: At fixed momentum, kinetic energy can be written K = p²/(2m). Step 2 — Working: p=√(2mK), so for equal K momentum is proportional to √m. Step 3 — Working: Ratio √1:√9=1:3. Correct answer: C — 1 : 3.